Improvement in paper-cutting machines



2 Sheets-Sheet 1.

W. l. R EID. Paper-Cutting Maching.

- Patentedune 22,1875.

THE GRAPHIC COJN 0T0 'L TH.39 B 41 PARK PLACE, NY.

Sh eets--Sheet 2. W. I. REID.

Paper-lCutting Machine. N0.]64,660 Patentedlune22,l87 5.

THE GRAPHIG COJHOTD-LITHJQ 8v" PARK PLACEJLY.

UNITED Srrnrns WILLIAM I. REID, OF PALMYRA, NEW YORK, ASSIGNOR TO WATSONB. SMITH, OF OMAHA, NEBRASKA.

IMPROVEMENT IN PAPER-CUTTING MACHlNES.

Specification forming part of Letters Patent No. 164,660, dated June 22,1875 application filed October 8,1874. I

To all whom it may concern:

Be it known that I, WILLIAM I. REID, of Palmyra, in the county of Wayneand State of New York, have invented an Improvement in Paper-CuttingMachines, of which the following is a specification Machines for cuttingpaper have been made with a blade connected by links to a frame, and theblade has received its end movement from a lever. The mechanism iscumbersome, expensive, occupies considerable space, and the shearing cutproduced by the endwise movement of the knife varies very much atdifferent portions of the movement. a

My invention consists in a pinion applied to the pivot or axis of one ofthe swinging links upon the knifebar itself, and preferably upon thepivot, said pinion being actuated by a lever, and the teeth actingagainst the teeth of a segmental rack that is curved from the fixedcenter of the said link; thereby the pinion is kept properly in gearwith the rack, and the knife is forced downward and endwise by thedirect action of the pinion upon the knifebar.

In carrying out this invention, I prefer to make the rack and piniondouble, or with a central slot, in which swings the knife-bar and link;hence the power will be applied uniformly at both sides of theknife-bar, and the head carrying these parts is adjustable, so as to setthe knife parallel with the table or bed below, and to compensate anywear from grinding or sharpening the knife.

In the drawing, Figure l is a front elevation of the machine. Fig. 2 isa section transversely of the cutter; and Fig. 3 is an elevation of thepinions, segments, and knife-stock.

The frame a supports the bed or table b, and the adjustable gage 0, ofany usual character, is moved by the screw 0. The frames are extendedupward above the bed I), and form guideposts f, between which the knifed and its stock 9 move. Above the posts f the headbloek h is sustainedand adjusted by the screws 5, and this head-block receives the pivots orconnecting-joints 2 of the links k, said links being connected at theirlower ends to the knife-bar g. It is preferable to make the knifebar 9either double, as represented in the section, or east with mortises, inorder that the links 7c may be within the knife-bar. The axis 4 of onelink 7c also forms the axis for the pinion or pinions I. It ispreferable to make the pinions double, and place one on each side of thestock, and connect them permanently with the forked lever orlever-socket m by means of keys or otherwise; and upon the head-blockare the segmental racks n for these pinions Z; hence, as the lever m ismoved in one direction, the pinions l are rolled along the segmentalrack to raise the knife by the direct force from the pinions applied atthe end of the knitebar, and when moved in the other direction thepinions are rolled along the segments, and the knife forced down uponthe paper by the links as they swing in the arcs of circles, carryingthe knife in a parallel horizontal position and cutting with a shearingcut.

The screw it andv clamp 12 serve to hold the material to the bed whilebeing cut.

I claim as my invention 1 1. The stationary segmental rack a upon theend of the head-block h, and the pinion 1 upon the knife-bar g, arrangedas set forth, in combination with the lever for actuating the pinion andthe links 7c, that simultaneously produce a parallel movement in theknife, and retain the pinion in contact with the segmental rack, as setforth.

2. The two-part pinion l at the sides of the knife-bar, connected to theforked lever m, in combination with the two segmental racks n, one ateach side of the knife-bar, and the guideposts f for the knife, to whichguideposts the head-block is ad justably connected, substantially as setforth.

Signed by me this 15th day of June, A. D. 1874.

WILLIAM I. REID. Witnesses:

* lnvnv F. EecLEs'roN,

Geo. M. BOWMAN.

